Balluff BES-516-540-S-4-H Sensor

Balluff BES-516-540-S-4-H is a compact, two-wire DC inductive proximity sensor designed for non-contact metal detection in automation environments. This BES 516-series device is a normally-open switch in an M30-form factor, enabling a compact footprint on conveyors, machine tooling, and assembly fixtures. The sensor is powered from a DC supply in the 10–30 V range, with built-in polarity reversal protection and short-circuit protection to guard against common wiring faults. As part of Balluff’s BES 516 family, it delivers rugged performance in industrial settings, where metal-target sensing is used to indicate presence, position, or motion in control sequences. When a metal target enters the sensing zone, the switch transitions, producing a robust signal suitable for PLCs and automation controllers. The BES-516-540-S-4-H variant shares Balluff’s reputation for repeatable, reliable operation in demanding environments, with the 516 family’s characteristic compact form factor helping to simplify sensor layouts and wiring in tight spaces. This model is appropriate for inline sensing on conveyors, tooling, and pick-and-place systems where metal presence triggers a downstream control action.